# 加载数据
library(readr)
rangoon = read_csv("rangoontweets.csv")

词云也显示了love是好评中频率最高的单词。

– 贬义词

重复之前的步骤，贬义词中“miss”，“dismal”和“hell”是top3，让我们也用词云来可视化。

DT::datatable(sent_neg_up)

textsentimentfreq_upabruptabruptNegative3addictaddictNegative1annoyannoyNegative3arduousarduousNegative1attackattackNegative2awkwardawkwardNegative2badbadNegative64badbadNegative64baselessbaselessNegative1bashbashNegative5beatbeatNegative22

贬义词词云

plot.new()
set.seed(100)
wordcloud(sent_neg_up$text,sent_neg_up$freq,"Dark2")

# 方法2 - 使用syuzhet包
text = as.character(rangoon$text) 
## 去掉回复
some_txt<-gsub("(RT|via)((?:\\b\\w*@\\w+)+)","",text)
## 清洗html链接
some_txt<-gsub("http[^[:blank:]]+",some_txt)
## 去掉人名
some_txt<-gsub("@\\w+",some_txt)
## 去掉标点
some_txt<-gsub("[[:punct:]]"," ",some_txt)
## 去掉数字
some_txt<-gsub("[^[:alnum:]]",some_txt)

# 可视化
library(ggplot2)
library(syuzhet)
mysentiment<-get_nrc_sentiment((some_txt))

# 得到每种情感的得分
mysentiment.positive =sum(mysentiment$positive)
mysentiment.anger =sum(mysentiment$anger)
mysentiment.anticipation =sum(mysentiment$anticipation)
mysentiment.disgust =sum(mysentiment$disgust)
mysentiment.fear =sum(mysentiment$fear)
mysentiment.joy =sum(mysentiment$joy)
mysentiment.sadness =sum(mysentiment$sadness)
mysentiment.surprise =sum(mysentiment$surprise)
mysentiment.trust =sum(mysentiment$trust)
mysentiment.negative =sum(mysentiment$negative)

# 绘制柱状图
yAxis <- c(mysentiment.positive,+ mysentiment.anger,+ mysentiment.anticipation,+ mysentiment.disgust,+ mysentiment.fear,+ mysentiment.joy,+ mysentiment.sadness,+ mysentiment.surprise,+ mysentiment.trust,+ mysentiment.negative)

xAxis <- c("Positive","Anger","Anticipation","disgust","Fear","Joy","Sadness","Surprise","Trust","Negative")
colors <- c("green","red","blue","orange","green","red")
yRange <- range(0,yAxis) + 1000
barplot(yAxis,names.arg = xAxis,xlab = "Emotional valence",ylab = "score",main = "Twitter sentiment for Movie Rangoon 2017",sub = "Feb 2017",col = colors,border = "black",ylim = yRange,xpd = F,axisnames = T,cex.axis = 0.8,cex.sub = 0.8,col.sub = "blue")
colSums(mysentiment)

我希望现有的Twitter应用程序支持某种Intent.我宁愿不使用建议here,因为这需要身份验证,AFAICT.

例如,如果用户已经安装了官方Twitter应用程序,那么在必要时,最好在该应用程序内完成任何身份验证.

我之前曾尝试联系官方Twitter应用程序背后的人,但没有得到回应.

https://dev.twitter.com/web/follow-button/web-intent

基本上只需使用ACTION_VIEW和url：https://twitter.com/intent/follow?user_id=<theuserid>

现在我也可以使用公共帐户的推文

ConfigurationBuilder cb = new ConfigurationBuilder();
cb.sethttpconnectionTimeout(10000)
.setHttpReadTimeout(10000)
.setoAuthConsumerKey(Config.TWITTER_CONSUMER_KEY)
.setoAuthConsumerSecret(Config.TWITTER_CONSUMER_SECRET)
.setoAuthAccesstoken(Utils.getPrefsstring(getActivity(),TwitterPrefsFragment.PREF_KEY_OAUTH_TOKEN,"")) // empty if not authentified
.setoAuthAccesstokenSecret(Utils.getPrefsstring(getActivity(),TwitterPrefsFragment.PREF_KEY_OAUTH_SECRET,"")); // empty if not authentified
TwitterFactory tf = new TwitterFactory(cb.build());
Twitter twitter = tf.getInstance();

List<twitter4j.Status> statuses = twitter.getUserTimeline(SOME_PUBLIC_TWITTER_ACCOUNT,new Paging(1,50));

但这仅在用户通过身份验证且应用程序在首选项中具有oauth令牌和机密时才有效.

如何获得没有访问令牌的Twitter公共时间线,即无需用户进行身份验证？

编辑

我正在重新提出我的问题以使其更清楚：

我设法验证我的Twitter应用程序和用户的代码为here.

现在,如果用户未登录,我如何获得公共时间表？在这种情况下,没有OAUTH_TOKEN和OAUTH_SECRET,并且上面显示的请求不起作用,因为空字符串设置为ConfigurationBuilder.setoAuthAccesstoken和ConfigurationBuilder.setoAuthAccesstokenSecret.

那么,如果它存在,那么获取公共时间线的请求是什么,没有OAUTH_TOKEN和OAUTH_SECRET？

如果您转到dev.twitter.com并转到您的应用设置,您可以看到消费者密钥,消费者密钥,访问令牌和访问令牌密钥.利用这些并遵循我的下面的代码,它应该工作,

ConfigurationBuilder cb = new ConfigurationBuilder();
        cb.setDebugEnabled(true)
                .setoAuthConsumerKey("B*************Q")
                .setoAuthConsumerSecret(
                        "l*************o")
                .setoAuthAccesstoken(
                        "1*************s")
                .setoAuthAccesstokenSecret(
                        "s*************s");
        TwitterFactory tf = new TwitterFactory(cb.build());
        twitter = tf.getInstance();
        try {
            List<Status> statuses;
            String user;
            user = "Replace this with the screen name whose Feeds you want to fetch";
            statuses = twitter.getUserTimeline(user);
            Log.i("Status Count",statuses.size() + " Feeds");

        } catch (TwitterException te) {
            te.printstacktrace();
        }

我使用了twitter 4j 3.03.jar.

我怎样才能获得经过身份验证的人的用户名.在这一点上,我只有一个经过验证的oAuth.

此外,Twitter对OAuth访问令牌请求的响应(即OAuth登录过程的最后部分)响应用户的屏幕名称和Twitter用户ID以及通常的oauth令牌和秘密.

NSMutableuRLRequest *request =[[NSMutableuRLRequest alloc]initWithURL:[NSURL URLWithString:[Nsstring stringWithFormat:@"https://api.twitter.com/1.1/users/show.json?screen_name=%@",username]]];

NSData *returnData = [ NSURLConnection sendSynchronousRequest: request returningResponse: nil error: nil ];

Nsstring *returnString = [[Nsstring alloc]initWithData:returnData encoding:NSUTF8StringEncoding];
    NSError *err = nil;

twitterLogin = [NSJSONSerialization JSONObjectWithData:[returnString dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:&err];

错误如下所示：

errors = (
{
    code = 215;
    message = "Bad Authentication data";
} );

第二,请参阅以下步骤：

下载FHSTwitterEngine Twitter图书馆.

2.将文件夹“FHSTwitterEngine”添加到您的项目中,然后添加#import“FHSTwitterEngine.h”.

3.将SystemConfiguration.framework添加到您的项目中.

Usage : 1.in the [ViewDidLoad] add the following code.

UIButton *logIn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    logIn.frame = CGRectMake(100,100,100);
    [logIn setTitle:@"Login" forState:UIControlStatenormal];
    [logIn addTarget:self action:@selector(showLoginWindow:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:logIn];

[[FHSTwitterEngine sharedEngine]permanentlySetConsumerKey:@"<consumer_key>" andSecret:@"<consumer_secret>"];
    [[FHSTwitterEngine sharedEngine]setDelegate:self];

并且不要忘记导入代理FHSTwitterEngineAccesstokenDelegate.

2. you need to get the permission for your request,with the following method which will present Login window:

- (void)showLoginWindow:(id)sender {
    [[FHSTwitterEngine sharedEngine]showOAuthLoginControllerFromViewController:self withCompletion:^(BOOL success) {
        NSLog(success?@"L0L success":@"O noes!!! Loggen faylur!!!");
    }];
}

当登录窗口出现时,输入您的Twitter用户名和密码来验证您的请求.

3. add the following methods to your code:

-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    [[FHSTwitterEngine sharedEngine]loadAccesstoken];
    Nsstring *username = [[FHSTwitterEngine sharedEngine]loggedInUsername];// self.engine.loggedInUsername;
    if (username.length > 0) {
        lbl.text = [Nsstring stringWithFormat:@"Logged in as %@",username];
        [self listResults];


    } else {
        lbl.text = @"You are not logged in.";
    }

}
- (void)storeAccesstoken:(Nsstring *)accesstoken {
    [[NSUserDefaults standardUserDefaults]setobject:accesstoken forKey:@"SavedAccessHTTPBody"];
}

- (Nsstring *)loadAccesstoken {
    return [[NSUserDefaults standardUserDefaults]objectForKey:@"SavedAccessHTTPBody"];
}

4.Now you are ready to get your request,with the following method(in this method I created a Twitter search for some Hashtag,to get the screen_name for example):

- (void)listResults {

    dispatch_async(GCDBackgroundThread,^{
        @autoreleasepool {
            [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;

        // the following line contains a FHSTwitterEngine method wich do the search.

            dict = [[FHSTwitterEngine sharedEngine]searchTweetsWithQuery:@"#iOS" count:100 resultType:FHSTwitterEngineResultTypeRecent unil:nil sinceID:nil maxID:nil];
          // NSLog(@"%@",dict);
            NSArray *results = [dict objectForKey:@"statuses"];

          //  NSLog(@"array text = %@",results);
            for (NSDictionary *item in results) {
                NSLog(@"text == %@",[item objectForKey:@"text"]);
                NSLog(@"name == %@",[[item objectForKey:@"user"]objectForKey:@"name"]);
                NSLog(@"screen name == %@",[[item objectForKey:@"user"]objectForKey:@"screen_name"]);
                NSLog(@"pic == %@",[[item objectForKey:@"user"]objectForKey:@"profile_image_url_https"]);
            }

            dispatch_sync(GCDMainThread,^{
                @autoreleasepool {
                    UIAlertView *av = [[UIAlertView alloc]initWithTitle:@"Complete!" message:@"Your list of followers has been fetched" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
                    [av show];
                    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
                }
            });
        }
    });
}

就这样.
我从搜索查询中获取了screen_name,您可以使用以下方法获取用户的时间轴：

// statuses/user_timeline
- (id)getTimelineForUser:(Nsstring *)user isID:(BOOL)isID count:(int)count;
- (id)getTimelineForUser:(Nsstring *)user isID:(BOOL)isID count:(int)count sinceID:(Nsstring *)sinceID maxID:(Nsstring *)maxID;

而不是上面的搜索方法.

注意：请参阅FHSTwitterEngine.h以了解需要使用的方法.
注意：获取< consumer_key>和< consumer_secret>您需要访问这个link 在Twitter上注册您的应用程序.